diff --git a/lib/src/estonian/PhraseEst.gf b/lib/src/estonian/PhraseEst.gf
index d4510b76a..904528395 100644
--- a/lib/src/estonian/PhraseEst.gf
+++ b/lib/src/estonian/PhraseEst.gf
@@ -17,6 +17,7 @@ concrete PhraseEst of Phrase = CatEst ** open ResEst, (P = Prelude) in {
     UttCN np = {s = np.s ! NCase Sg Nom} ;
     UttAP np = {s = np.s ! P.False ! NCase Sg Nom} ;
     UttCard n = {s = n.s ! Sg ! Nom} ;
+    UttInterj i = i ;
 
     NoPConj = {s = []} ;
     PConjConj conj = {s = conj.s2} ;
diff --git a/lib/src/russian/PhraseRus.gf b/lib/src/russian/PhraseRus.gf
index e377335c3..4bb8561cc 100644
--- a/lib/src/russian/PhraseRus.gf
+++ b/lib/src/russian/PhraseRus.gf
@@ -20,6 +20,7 @@ concrete PhraseRus of Phrase = CatRus ** open Prelude, ResRus in {
     UttCN n = {s = n.s ! NF Sg Nom nom} ;
     UttCard n = {s = n.s ! Neut ! Inanimate ! Nom} ;
     UttAP ap = {s = ap.s ! AF Nom Inanimate (GSg Neut)} ; ---- gennum ? (AR)
+    UttInterj i = i ;
 
     NoPConj = {s = []} ;
     PConjConj conj = ss conj.s2 ;
diff --git a/lib/src/thai/PhraseTha.gf b/lib/src/thai/PhraseTha.gf
index aeec42165..31600f859 100644
--- a/lib/src/thai/PhraseTha.gf
+++ b/lib/src/thai/PhraseTha.gf
@@ -17,6 +17,7 @@ concrete PhraseTha of Phrase = CatTha ** open Prelude, ResTha in {
     UttCard x = x ;
     UttVP vp = {s = vp.s ! Pos ++bIND++ vp.e} ;
     UttAdv adv = adv ;
+    UttInterj i = i ;
 
     NoPConj = {s = []} ;
     PConjConj conj = ss conj.s2 ;